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Unknown (pre-1923 photo) Watson, per the link in the source, left Johns Hopkins in 1921 (on bad terms). This is a photo of him there. - Public Domain
Unknown (Bain News Service, publisher) - Public Domain
Moshe Pridan - Public Domain
The Library of Congress -
Billinghurst -
Public Domain
Georges Biard - CC BY-SA 3.0
neznamy -
CDC - Public Domain
Rob Croes (ANEFO) - CC0 1.0
Olivier Strecker - CC BY-SA 3.0
unknown - Public Domain
:wMeowwcat - CC BY 3.0
:Category:Mark Bunker - CC BY-SA 3.0
Bain News Service - Public Domain
Jennifer - CC BY-SA 2.0
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Unknown (pre-1923 photo) Watson, per the link in the source, left Johns Hopkins in 1921 (on bad terms). This is a photo of him there. - Public Domain
Watson, John B. (John Broadus), 1878-1958
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Unknown (Bain News Service, publisher) - Public Domain
Lasker, Edward 1912-1997
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Moshe Pridan - Public Domain
Sachs, Leo, 1924-
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Morey, Henry Lee, 1841-1902
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The Library of Congress -
Gómez, Vicente, 1911-2001
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Billinghurst -
Doyle, John Andrew, 1844-1907
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Richardson, Miranda
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Public Domain
Zschokke, Heinrich, 1771-1848
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Kapit︠s︡a, P. L. (Petr Leonidovich), 1894-1984
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Ames, Adelbert, 1880-1955
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Georges Biard - CC BY-SA 3.0
Villeret, Jacques
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Washington, Henry S. (Henry Stephens), 1867-1934
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Semmelweis, Ignác Fülöp, 1818-1865
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neznamy -
Gajda, R. (Rudolf)
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CDC - Public Domain
Roueché, Berton, 1911-1994
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Rob Croes (ANEFO) - CC0 1.0
Hulsker, Jan
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Olivier Strecker - CC BY-SA 3.0
Venantini, Venantino, 1930-...
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unknown - Public Domain
Brownback, Sam, 1956-
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Allen, Ralph, approximately 1693-1764
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Viotti, Giovanni-Battista 1755-1824
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Bland, James A.
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Turpie, David, 1829-1909
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:wMeowwcat - CC BY 3.0
Doran, Colleen, 1963-
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:Category:Mark Bunker - CC BY-SA 3.0
Lifton, Robert Jay, 1926-....
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Kessler, David A., 1951-....
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Beuth, Peter Christian Wilhelm, 1781-1853
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Bain News Service - Public Domain
Akeley, Carl Ethan, 1864-1926
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Warren, John, 1753-1815
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Byrd, Harry F., Jr. (Harry Flood), 1914-2013
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Jennifer - CC BY-SA 2.0
Alfonso, Kristian 1964-....